Ergonomic chair



FIG. 1 is a top view of an ergonomic chair showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a rear perspective view thereof; and,

FIG. 8 is a front perspective view thereof.

CLAIM The ornamental design for an ergonomic chair, as shown anddescribed.